.index{
    width: 100%;
    .container{
        width: 1200px;
        margin: 0 auto;
        .main{
            margin: 0 auto;
            width: 100%;
            min-height: 900px;
            position: relative;
            z-index: 10;
            background: #fff;
            box-shadow: 0 3px 15px 0 rgba(0, 0, 0, 0.3);
            border-radius:5px;
        }
    }
    .footer{
        height: 245px;
        margin-top: -50px;
        padding-top: 30px;
        background-color: #333333;
        box-sizing: border-box;
        text-align: center;
        color: #fff;
        padding-top: 120px;
    } 
}